source: trunk/examples/novice/N05/src/ExN05SteppingAction.cc @ 1288

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
//
// $Id: ExN05SteppingAction.cc,v 1.7 2006/06/29 17:53:47 gunter Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//

#include "ExN05SteppingAction.hh"
#include "ExN05SteppingActionMessenger.hh"

#include "G4VVisManager.hh"
#include "G4Polyline.hh"
#include "G4Colour.hh"
#include "G4VisAttributes.hh"
#include "G4SteppingManager.hh"

ExN05SteppingAction::ExN05SteppingAction()
:drawFlag(false)
{
  new ExN05SteppingActionMessenger(this);
}

void ExN05SteppingAction::UserSteppingAction(const G4Step*)
{
  if(drawFlag)
  {
    G4VVisManager* pVVisManager = G4VVisManager::GetConcreteInstance();

    if (pVVisManager) {
      const G4SteppingManager* pSM = fpSteppingManager;
      G4Polyline polyline;

      G4double charge = pSM->GetTrack()->GetDefinition()->GetPDGCharge();
      G4Colour colour;
      if      (charge < 0.) colour = G4Colour(1., 0., 0.);
      else if (charge > 0.) colour = G4Colour(0., 0., 1.);
      else                  colour = G4Colour(0., 1., 0.);
      G4VisAttributes attribs(colour);
      polyline.SetVisAttributes(attribs);
      polyline.push_back(pSM->GetStep()->GetPreStepPoint()->GetPosition());
      polyline.push_back(pSM->GetStep()->GetPostStepPoint()->GetPosition());
      pVVisManager -> Draw(polyline);
    }
  }
}